Ready to Ship – .308 10 twist LV contoured, SPIRAL FLUTED, barrel blank. The stainless, #4, and LV contoured blanks are 27″ and can finish at 26″ or less. The contoured barrel blanks have a 1.200″ shank diameter. The #4 is a sporter contour finishing at .685″ at 26″. The LV is a straight taper with a barrel ending at .800″ at 26″. This barrel has the flutes stopping at 24″.